Hydraulic sealing machine



` June .6,1944. w. L. owENs A2,350,474

HYDRAULIC SEALING MACHINE Filed Dec. 3,' 1941 s sheets-sheet 2 W'lel' Lw www' June 6, 1944. w. l.. owENs 2,350,474

y HYDRAULIC SEALING MACHINE f `Filed Dec. s, 1,941 s sheets-sheet s' milg( l .bgg-

l. Q N@ y N i a 7x l] v N Q im /w t@ g E I Patented June 6, 1944 HYDRAULIC SEALING MACHINE Walter Lee Owens,-Chestereld, Ind., assigner to Robert W. Shoemaker, Anderson, Ind.

Application December 3, 1941, Serial No. 421,465

8 Claims.

The invention relates to `the banding or '-binding of metal sheets, and other materiaL'into pack'- ages for convenient handling and shipping, and more particularly to a machine forrvxing seals upon `the overlappedends of the bands with which the packages are bound.

ISheets of steel are usually shipped from the mill in packages or bundles bound with steel bands or straps, the ends of which are vconnected together vby sheet `metal seals, and the vpresent invention pertains to machines for attaching said seals to thebands.

These steel Abands may be stretchedaround the bundle or package of sheets, or other material, by

any suitable banding machine,- which may -be of 1 the type disclosed lin my United States Letters Patent No. 2,247,398, dated Julygl, 1941by means of which the bands are strapped tightly Aaround the bundle with theends of the bands overlapped to receive sheet metal seals which Aare usually crimped upon thev overlapped ends of the bands, by a sealing machine, Ato hold the .bands tightly bound ,aroundzthepackage .Such sealing machines as are now in Igeneral use for this purpose are Yverylargaheavy andicumbersome, requiring the workman to'usehoth hands in operating thesarne, vnecessitating one manlto .op- .erate the banding machine -to stretch a band aroundvthe packageand another man to operate the sealing machine.

. This is particularly vtrue o f the sealing ma.- chines used for sealing the larger bands of allproximately two inches vin'width, the sealing machines vcustomarily used for isuch purpose vweighing about thirty .pounds-and having two heavy operating levers,each several-feet in length. y y

A Nfurther objection .to the .customary sealing machines is that, .due tothe fact that `they are constructed so as to crimp or cut the seal and band downward toward the package, it is dicult, and sometimes almost impossible, to operate them in case the band and seal are flattened tightly against the package.

Furthermore the sealing machines used under present practice are hand operated, mechanical devices, frequently requiring considerable effort to operate.

The present invention Acontemplates the provision of a hydraulic sealing machine designed to overcome the objections to the present type of sealing machines.

Another object of the invention is to provide .a sealingV machine for operating upon the largest size` seals Vand which weighs considerably jless than the machines now in use for thepurpose.

A further object is the vprovision of a'hydraulic sealing machine of relatively lightweight and constructed so as to be operated with one hand, leaving the other hand free to operate a banding machine.

A still further vobject of vthe `invention is the provision of a `band sealing Vmachine'constructed so as to cut the seal and band upward, and having tapered jaws arranged to be inserted Aunder the edges of the seal so ,that it will operatesatisfactorily even though the lband and seal yarelocated tightly against the package.

Another object is the provision of a sealing machine of the Atype referred to in which cuttingr knives are carried upon opposed, pivotedrjaws having tapered lips arranged to engage lbeneath opposite side edges ,of the seal. s A

h Still another object is the provision of a sealing machine of the hydraulic Atjypein which-the pivoted jaws are opera-ted through toggle `levers operatively connected `to the ram or piston of a hydraulic cylinder.

A further object is the ,provision of sucha hydraulic sealing machine in whichthe -pivotedjjaws are pivotally mounted upon the sides of the -hy draulic cylinder and a dieisxed upon the lowei end of the cylinder for clamping Aand mashing down the central portiony of the seal andband'during the operation ,of the machine.

A still kfurther object of the invention -is v.the provision of a machine, of this type so constructed that it will be held in 4a vertical position upon the 'package and having `a handle grip by means of which the machine gmay lbe easilyfca-rriedwith one hand. y

Still another objectis'the provision ofv'a sealing machine having a-knifer for scoringthe band transversely,so that Atheloose end o f the bandmay be easily broken afterY theseal is'alllxed.A

The above objects together with others which will be apparent vf romthe drawings andfollowing description, or Whichmay be later IeerredtO, may be attained by constructing the improved ,hydraulic sealing machine in'rthe'manner illustrated in the accompanying drawings, in Which-- Figure 1 lis `a yside elevation of the vimproved hydraulic sealing machine with'the jaws -in the open or'normal position; I

Fig. 2, a front elevation o f the --machine in the position shown in Fig. 1; y

Fig. l3, a top plan view ofthe machine withthe J'aWsinthe closed'oroperated position; Y

""Fig.' 4, a bottom planj view of the-machinewith the jaws "inthe gopen position as shown in Figs. `1 and 2;

4which the jaws are pivoted. 1

Fig. 5, a vertical sectional elevation of the machine showing the jaws in closed position;

Fig. 6, a fragmentary elevation of the inner side of one jaw;

Fig. 7, a fragmentary sectional view showingk View vof one of portion of the overlapped ends of a band showing the seal placed thereon in position for sealing?l 5 Fig. 11, a view similar to Fig. 1'o after the seal and. band have been cut and sealed by the iin-1'V proved hydraulic sealing machine. Similar numerals refer to similar parts throughout the drawings.

The hydraulic sealing machine to which the invention pertains is operated by means of a hydraulic jack of any usual and well-known' construction, comprising the cylinder I5 having the vram or piston I6 therein arranged to be operated by the hydraulic pump I1 which is mounted upon the base I8 carrying the cylinder, a valve I9 of any usualv and suitable construction being provided for controlling the communication between the pump and the' cylinder as 4in usual and wellknown practice. 1 '.The pump II is provided with the usual operating -handle pivotally connected as atzI to the plunger of the pump and having its inner end pivotally connected as at 22 to the links 23 pivoted at their lower endstothe base I8as indicatedlat 2li.` Y v Y A pair ofA similar jaws 25 is pivotally mounted between the depending spaced flanges 26 rigidly connected to the underside of the Ybase I8 of the jack. Forthis purpose each jaw' may have an inwardly disposed boss 21 extending between the depending flanges 26 and having'a bearing opening 28 receiving the adjacent b'olt 29 upon rEach' jaw 25 has a pair Aof cutting knives 30 mounted thereon, the knives being preferably formed upon'thefpins 3l received in suitable `openings 32 in thejaws. The cutting edge porftion of each of these knives is located within an angular, lateral recess 33 inthe inner face 'of tl'1 e jaw, terminating at its lo'wer end in the tapered inwardlydisposedlip 34. v

Eachy jaw has Van integral upwardly disposed levrportion 3 5 .formed thereon and preferably provided with'spaced notches36 atA its upper end Y fora purpose to be later described. A dual, inverted U-shape bracket 31 is fixed upon the upperA end of the ramror pistonV I6 of the jack and provided'vvith`r a; pair of depending arms 38 extending down along'the forward side o f the cylinder I5 and outwardly'disposed at their lower ends as at 39, and a pair of spaced parallelarms 40 eXtending down along the rear side of the cylinder and straddling the pump I 'I.-

,to pins 41, upon the basewl8, at their 'lower to .the lower for the purpose of pulling the ram or piston I6 of the jack down to normal position when the valve I9 is operated to release the piston.

A block or anvil 48 is rigidly mounted below the base I8 and provided with the flange portion 49 extending between the spaced cutting knives on the jaws and adapted to clamp and mash the central portion of the seal downward while at the same time the lower ends of the depending anges 26 zclarnp and jhold downthe ends of the seal duringthe cuttingor sealing operation.

For the purpose of holding the sealing machine the base I8 and terminates at its free end in the Adown turned portion 5I having a foot 52 which may `be of rubber or the like adapted to rest Yupon the top of the bundle.

A handle grip 53 may be connected to the stirrup 54 xed to the upper end of the dual, U-shape bracket 41 for the purpose of carrying the machine around the mill and placing it in position upon a bundle to be banded and sealed.

For the purpose ofvoperating thevalve I9 to release the jack ram or piston I6, when the same has -been raised to the necessaryheight, a chain o r other flexible member 55 maybe connected tothe cross arm 44 .and to an angular arm 56 upon the valve stem.

Means may-be provided for scoring the pro-y truding end portion of the band after the sealing operation in order that the end of the band may be severed at this point. For this purpose the scoring vblade 51,'provided with a serrated scoring edge 58, is carried on the lower'end of the operating lever 59 journaled upon the eccen tric 60 which 'is pivotally mounted upon the bolt 6I carried by theadjacent depending flange 26.

A lever 62 is fixed upon the eccentric and when located in the position shown in Fig. 2 raises the scoring bladeout of contact with the band. When the lever 62 is thrown to the position shown in Fig. 7 the eccentric 6Il`is rotated upon the bolt 6I to lower thev scoring blade so that the same will contact with the band.

A latch member 63 vis pivoted upon thelever 59 as-at 64 and provided with a socket 65 adapted to. receive the head 66 of the lever 62 upon the eccentric, thus locking the eccentric in position to hold the scoring blade lowered against the band. Thev lever handle 59 may then be operatedto score Vthe loose end of the band so that the same may be easily broken oi at this point.

A pair of coil springs 6I may be provided for normally holdingthelever 59 in ver-ticalposition, one of these springsbeing connected to each yside of the lever'as shown at 68 and to the adjalcent side of the base I8 as at 69. l i

In forming apackage of sheets or'the like one or more metal bands or straps, as indicated at 10,- may be placed around the package with the overlapped ends thereof inserted through a sheet metal seal 1I, and the bandv is Vdrawn tightly around the package by any suitable form of banding machine or tool.

The improved sealing machine is then placed over the seal 40 in the open position, as shown in Fig. 2, and the pump is operated by the handle 20 raising the ram orA p iston I6 inV the cylinder so that through the U-shape member 38, links 4I and lever arms 35 the jaws 25 Vare'moved toward'each other as shown in Fig. 5,A engaging the tapered lips 34 under opposite 'edges of the seal, the cutting edges 3 Ilfof 'the knives cuttingA oppo-f site edge portions of the seal, and.band-,vat spaced points'as indicated atv 'I2 in Fig. 11.

The beveled surfaces 'I3 of the cutting knives at the same time` bend the edge portions of the sealand band upward at the outer sides of the cuts, as shown at 14, while the flange portion 49 of the Yblock 48, and the lower ends of the depending flanges 26, clamp and mash down the central portion of the seal between the cuts, as indicated at l5, and the end portions of the seal, as indilcated at 16, thus sealing the band while it is tightly stretched around the package so that it cannot be removed unless it is severed by shears or the like.

In order to then remove the loose end of the band the eccentric 60 may be operated by the lever 62 to lower the serrated edge of the scoring blade 51 into contact with the band. The pivoted latch member 63 is then dropped down so that the head 66 of the lever 62 is received in the socket 65 of said latch member and the lever handle 59 is swung back and forth causing the serrated edge of the scoring blade to score the end portion of the band sufficiently so that it may be broken off at this point.

From the above it will be seen that the improved hydraulic sealing machine may be easily and quickly operated with one hand, to'cut and seal large size seals more easily and readily than the large, heavy and cumbersome sealing machines now in use for such purpose, while the operator may use his other hand to operate the banding machine to hold the band stretched tightly around the package while it is being sealed.

I claim:

l. A hydraulic sealing machine for fixing a seal upon the overlapped ends oil a band, said machine including a hydraulic cylinder, a ram in the cylinder, means for admitting fluid to the cylinder, a pair of jaws pivotally mounted below the cylinder, spaced cutting knives diverging upwardly from the lip of each of the jaws, upwardly disposed lever arms fixed upon the jaws, an inverted U-shape bracket carried by the ram and links pivotally connecting the lever arms to the U-shape bracket.

2. A hydraulic sealing machine for xing a seal upon the overlapped ends of a band, said machine including a hydraulic cylinder, a ram in the cylinder, means for admitting uid to the cylinder, a pair of jaws pivotally mounted below the cylinder, spaced cutting knives diverging upwardly from the lip of each of the jaws, upwardly disposed lever arms xed upon the jaws, an inverted U-shape bracket carried by the ram and links pivotally connecting the lever arms to the U-shape bracket, and spring means for normally urging the ram downward in the cylinder.

3. A hydraulic sealing machine for fixing a seal upon the overlapped ends of a band, said machine including a hydraulic jack comprising a cylinder with a ram therein, a pump for operating tlie ram and a valve controlling the ow of fluid between the pump and cylinder, a pair of jaws pivotally mounted below the jack, cutting knives upon the opposed surfaces of the jaws, upwardly disposed lever arms xed upon the jaws, means including links pivotally connecting the lever arms to the ram and means operatively connected to the ram and to the valve and operated by the raising of the ram for operating the valve to release the ram when said ram is raised to a predetermined height.

.41.A hydraulic 'sealing machine for fixing asealupon the overlapped. ends of a band, said ma-= chine including ahydraulic jack comprising a cylinder with a ram therein, a pump for operating the ram, al valve controlling the flow of fluid. between the-pump and cylinder, a pair of jaws:A pivotally mounted .below the jack, cutting knives.

upon the opposed surfaces of the jaws, upwardly disposed lever arms fixed upon the jaws, means including links pivotally connecting the lever arms to the ram, and a exible member connected at opposite ends to the ram and to the valve for operating the valve to release the ram when said ram is raised to a predetermined height.

5. A hydraulic sealing machine for fixing a seal upon the overlapped ends of a band, said machine including a hydraulic jack comprising a cylinder with a ram therein, a pump for operating the ram, a valve controlling the flow of fluid between the pump and cylinder, a pair of jaws pivotally mounted below the jack, cutting knives' upon the opposed surfaces of the jaws, upwardly disposed lever arms xed upon the jaws, an inverted U-shape bracket carried by the ram, links pivotally connecting the lever arms to the U- shape bracket, a valve controlling the flow of iiuid between the pump and cylinder, and means operatively connected to the U-shape bracket and to the valve and operated by the raising of the ram for operating the valve to release the ram when said ram is raised to a predetermined height.

6. A hydraulic sealing machine for fixing a seal upon the overlapped ends of a band, said machine including a hydraulic jack comprising a cylinder with a ram therein, a pump for operating the ram, a valve controlling the flow of fluid between the pump and cylinder, a pair of jaws pivotally mounted below the jack, cutting knives upon the opposed surfaces of the jaws, upwardly disposed lever arms fixed upon the jaws, an inverted U-shape bracket carried by the ram, links pivotally connecting the lever arms to the U- shape bracket, a valve controlling the flow of fluid between the Dump and cylinder, and means operatively connected to the U-shape bracket and to the valve and operated by the raising of the ram for operating the valve to release the ram when said ram is raised to a predetermined height and spring means for normally urging the ram downward in the cylinder.

'7. A hydraulic sealing machine for fixing a seal upon the overlapped ends of. a band, said machine including a hydraulic jack comprising a cylinder with a ram therein, a pump for operating the ram, a valve controlling the flow of fluid between the pump and cylinder, a pair of jaws pivotally mounted below the jack, cutting knives upon the opposed surfaces of the jaws, upwardly disposed lever arms xed upon the jaws, an inverted U-shape bracket carried by the ram, links pivotally connecting the lever arms to the U- shape bracket, a valve controlling the flow of fluid between the pump and cylinder, and a iiexible member connected at opposite ends to the U-shape bracket and to the valve for operating the valve to release the ram when said ram is raised to a predetermined height.

8. A hydraulic sealing machine for xing a. seal upon the overlapped ends of a band, said machine including a hydraulic jack comprising a cylinder with a ram therein, a pump for operating the ram, a valve controlling the ilow of fluid between the pump and cylinder, a, pair of jawsv pivotally mounted below the jack, cutting knives uponithe opposed surfaces of the jaws, upwardly U-shape bracket and to the valve for operating disposed lever arms xed upon the jaws, an in, the valve to release the ram when' said ramis verted U-,shape bracketvcarriedbyrthe ram, links raised to va predetermined height andwsprng pivotally, connecting the lever arms to the U, means for normally urging the ram downward in shape bracket, avalve controlling theow of the cylinder. uid between the pump and cylinder, and a flex-` iblemember connected at opposite ends to the WALTER LEE OWENS.4 

